Oleg Ruchayskiy - new Associate Professor – University of Copenhagen

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15 January 2016

Oleg Ruchayskiy - new Associate Professor

Oleg Ruchayskiy is a new Associate Professor in Phenomonogy.
His research interests lie at the interface of particle physics, astrophysics, cosmology and physics on the early Universe.

There are several firmly established observational phenomena that do not find their explanation within the otherwise extremely successful "Standard Model of particle physics" . There phenomena - neutrino oscillations, matter-antimatter asymmetry of the Universe, dark matter - indicate existence of new particles that have not been detected at accelerators or in other laboratory experiments.

Why have these particles escaped our detection? Is it because they are too heavy or is it because their interactions are "too rare"?

I study the latter option -- that there are new light (with masses in the range from few keV to few GeV) particles that interact "super-weakly" (weaker than neutrinos).
An example of such a particle is sterile neutrino The "Neutrino Minimal Standard Model" (the nuMSM) provides a example of a  model, explaining all BSM phenomena with only 3 sterile neutrinos and being consistent quantum field theory up to very high scales.

Search for this and other "hidden particles" is the scientific goal of the SHiP experiment that is currently being shaped in CERN. I am a part of the SHiP collaboration.